Yep, I do agree with Crono, to an extent.
Kingdom Hearts hasn't been announced for any system. SquareEnix has said that they plan on supporting all three platforms equally. At the moment, most of their announced support is for the PS3. This means that either:
1) They were lying, and they just said that to soothe angry customers who did not have a PS3
2) The games that are planned for the 360/Wii are still early in development and have not been announced.
If the latter is true, Kingdom Hearts would fit the bill perfectly for 360/Wii development. I would personally suspect the 360, actually, as Kingdom Hearts is an American-heavy RPG (more than 2/3 of its sales came from America), and if you're planning on supporting the 360 at all, this would be the right type of game, as it's an American-heavy system. The Wii also makes sense though: it's certainly the most kid friendly of the three consoles, and Kingdom Hearts is a more kid-friendly game.
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